Grand Tour
After 1 event: Lucerne - Chapel Bridge In Photo Travel
After 2 events: Siena, Piazza del Campo In Photo Travel
After 3 events: Main Square of San Gimignano In Photo Travel
After 4 events: Abbey of San Galgano In Photo Travel
It does not say anything about having to Gold them in the Prize list.
That could be the case, I didn't even know there was cut scenes. I think the only one that I saw was the one where the driver is holding the trophy. I'll go back and do them again.
If you've already completed these events and just need to watch the cutscenes, you don't need to race. Just start up the first race, and go to 'next' race and do it all the way until the end. You'll unlock them all without having to go through the races again.